Gson解析工具类

  Gson解析工具类

包含对null  ,空字符串的处理

public class GsonUtils implements JsonSerializer<String>, JsonDeserializer<String> {

    private GsonUtils() {
    }

    public static <T> T parseJSON(String json, Class<T> clazz) {
        GsonBuilder gb = new GsonBuilder();
        gb.registerTypeAdapter(String.class, new GsonUtils());
        Gson gson = gb.create();
        T info = gson.fromJson(json, clazz);
        return info;
    }

    public static <T> T parseJSON(String json, Type type) {
        GsonBuilder gb = new GsonBuilder();
        gb.registerTypeAdapter(String.class, new GsonUtils());
        Gson gson = gb.create();
        T info = gson.fromJson(json, type);
        return info;
    }

    public static <T> List<T> jsonToList(String json, Class<? extends T[]> clazz) {
        Gson gson = new Gson();
        T[] array = gson.fromJson(json, clazz);
        return Arrays.asList(array);
    }

    /**
     * @param json
     * @param clazz
     * @return
     */
    public static <T> ArrayList<T> jsonToArrayList(String json, Class<T> clazz) {
        GsonBuilder gb = new GsonBuilder();
        gb.registerTypeAdapter(String.class, new GsonUtils());
        Type type = new TypeToken<ArrayList<JsonObject>>() {
        }.getType();
        ArrayList<JsonObject> jsonObjects = gb.create().fromJson(json, type);
        ArrayList<T> arrayList = new ArrayList<>();
        for (JsonObject jsonObject : jsonObjects) {
            arrayList.add(new Gson().fromJson(jsonObject, clazz));
        }
        return arrayList;
    }

    @Override
    public String deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
        return json.getAsJsonPrimitive().getAsString();
    }

    @Override
    public JsonElement serialize(String src, Type typeOfSrc, JsonSerializationContext context) {
        if (src == null) {
            return new JsonPrimitive("");
        } else {
            return new JsonPrimitive(src.toString());
        }
    }
}